文章基本信息

标题：Predation may defeat spatial spread of infection
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作者：Ivo Siekmann ; Horst Malchow ; Ezio Venturino 等
期刊名称：Journal of Biological Dynamics
印刷版ISSN：1751-3758
电子版ISSN：1751-3766
出版年度：2008
卷号：2
期号：1
页码：40-54
DOI：10.1080/17513750801942552
出版社：Taylor & Francis
摘要：A model of a phytoplankton–zooplankton prey-predator system with viral infection of phytoplankton is investigated. Virus particles ( V ) are taken into account by an explicit equation. Phytoplankton is split into a susceptible ( S ) and an infected ( I ) class. A lytic infection is considered, thus, infected phytoplankton cells stop reproducing as soon as the infection starts and die at an increased mortality rate. Zooplankton ( Z ) is grazing on both susceptible and infected phytoplankton following a Holling-type II functional response. After the local dynamics of the V − S − I − Z system is analysed, numerical solutions of a stochastic reaction–diffusion model of the four species are presented. These show a spatial competition between zooplankton and viruses, although these two species are not explicitly coupled by the model equations.
关键词：plankton ; lytic viral infection ; reaction–diffusion system ; spatiotemporal structures; patchiness ; multiplicative noise